Related Clues:

• Per-unit charge
• Stack up
• Make a top ten list, e.g.
• Utility bill datum
• Timely charge
• Fixed fee
• Be something special
• Give a "G" or "PG," say
• See 6 Down
• Bank quote
• Get through an inspection
• '-- out!' ('Quit that!')
• Assign an NC-17, say
• Number of prime interest
• Deserve special perks, say